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## $Id: Core.pm,v 1.1 2003/01/19 01:23:04 joko Exp $ |
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## |
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## Copyright (c) 2002 Andreas Motl <andreas.motl@ilo.de> |
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## |
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## See COPYRIGHT section in pod text below for usage and distribution rights. |
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## |
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## ---------------------------------------------------------------------------------------- |
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## $Log: Core.pm,v $ |
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## Revision 1.1 2003/01/19 01:23:04 joko |
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## + new from Data/Transfer/Sync.pm |
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## |
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## Revision 1.11 2002/12/23 07:10:59 joko |
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## + using MD5 for checksum generation again - the 32-bit integer hash from DBI seems to be too lazy |
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## |
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## Revision 1.10 2002/12/19 01:07:16 joko |
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## + fixed output done via $logger |
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## |
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## Revision 1.9 2002/12/16 07:02:34 jonen |
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## + added comment |
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## |
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## Revision 1.8 2002/12/15 02:03:09 joko |
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## + fixed logging-messages |
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## + additional metadata-checks |
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## |
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## Revision 1.7 2002/12/13 21:49:34 joko |
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## + sub configure |
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## + sub checkOptions |
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## |
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## Revision 1.6 2002/12/06 04:49:10 jonen |
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## + disabled output-puffer here |
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## |
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## Revision 1.5 2002/12/05 08:06:05 joko |
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## + bugfix with determining empty fields (Null) with DBD::CSV |
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## + debugging |
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## + updated comments |
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## |
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## Revision 1.4 2002/12/03 15:54:07 joko |
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## + {import}-flag is now {prepare}-flag |
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## |
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## Revision 1.3 2002/12/01 22:26:59 joko |
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## + minor cosmetics for logging |
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## |
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## Revision 1.2 2002/12/01 04:43:25 joko |
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## + mapping deatil entries may now be either an ARRAY or a HASH |
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## + erase flag is used now (for export-operations) |
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## + expressions to refer to values inside deep nested structures |
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## - removed old mappingV2-code |
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## + cosmetics |
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## + sub _erase_all |
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## |
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## Revision 1.1 2002/11/29 04:45:50 joko |
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## + initial check in |
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## |
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## Revision 1.1 2002/10/10 03:44:21 cvsjoko |
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## + new |
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## ---------------------------------------------------------------------------------------- |
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|
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|
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package Data::Transfer::Sync::Core; |
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|
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use strict; |
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use warnings; |
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|
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use mixin::with qw( Data::Transfer::Sync ); |
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|
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|
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - main |
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|
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use Data::Dumper; |
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|
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use misc::HashExt; |
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use libp qw( md5_base64 ); |
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use libdb qw( quotesql hash2Sql ); |
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use Data::Transform::Deep qw( hash2object refexpr2perlref ); |
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use Data::Compare::Struct qw( getDifference isEmpty ); |
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use Data::Storage::Container; |
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use DesignPattern::Object; |
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|
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# get logger instance |
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my $logger = Log::Dispatch::Config->instance; |
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|
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$| = 1; |
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|
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=pod |
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sub new { |
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my $invocant = shift; |
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my $class = ref($invocant) || $invocant; |
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my $self = {}; |
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$logger->debug( __PACKAGE__ . "->new(@_)" ); |
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bless $self, $class; |
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$self->configure(@_); |
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return $self; |
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} |
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=cut |
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|
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|
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sub _init { |
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my $self = shift; |
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|
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# build new container if necessary |
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$self->{container} = Data::Storage::Container->new() if !$self->{container}; |
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|
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# add storages to container (optional) |
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foreach (keys %{$self->{storages}}) { |
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$self->{container}->addStorage($_, $self->{storages}->{$_}); |
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} |
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|
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return 1; |
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|
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} |
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|
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sub _initV1 { |
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my $self = shift; |
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# tag storages with id-authority and checksum-provider information |
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# TODO: better store tag inside metadata to hold bits together! |
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map { $self->{container}->{storage}->{$_}->{isIdentAuthority} = 1 } @{$self->{id_authorities}}; |
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map { $self->{container}->{storage}->{$_}->{isChecksumAuthority} = 1; } @{$self->{checksum_authorities}}; |
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map { $self->{container}->{storage}->{$_}->{isWriteProtected} = 1; } @{$self->{write_protected}}; |
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} |
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|
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|
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sub _preCheckOptions { |
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|
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my $self = shift; |
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my $opts = shift; |
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|
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#print Dumper($opts); |
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#exit; |
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|
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# the type of the to-be-synced item |
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if (!$opts->{source}->{nodeType}) { |
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$logger->error( __PACKAGE__ . "->_preCheckOptions failed: Please specify \"source-type\"."); |
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return; |
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} |
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# the name of the (container-) node the items are listed in |
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if (!$opts->{source}->{nodeName}) { |
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$logger->error( __PACKAGE__ . "->_preCheckOptions failed: Please specify \"source-node\"."); |
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return; |
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} |
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|
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# a "map"-declaration which module to use for mapping- and/or lookup-purposes |
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if (!$opts->{map}) { |
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$logger->warning( __PACKAGE__ . "->_preCheckOptions: No mapping supplied - please check key 'map|mappings' in global configuration or specify additional argument '--mapping-module'."); |
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return; |
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} |
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if (!$opts->{map}->{moduleName}) { |
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$logger->warning( __PACKAGE__ . "->_preCheckOptions: Currently only perl-modules can provide mappings: Please specify one with '--mapping-module'."); |
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return; |
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} |
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|
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return 1; |
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|
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} |
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|
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|
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|
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|
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|
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|
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|
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|
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|
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sub _buildFieldmappingV1 { |
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my $self = shift; |
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|
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# build mapping |
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# incoming: and Array of node map entries (Array or Hash) - e.g. |
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# [ 'source:item_name' => 'target:class_val' ] |
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# { source => 'event->startDateTime', target => 'begindate' } |
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foreach (@{$self->{args}->{mapping}}) { |
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if (ref $_ eq 'ARRAY') { |
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my @entry1 = split(':', $_->[0]); |
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my @entry2 = split(':', $_->[1]); |
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my $descent = []; |
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my $node = []; |
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$descent->[0] = $entry1[0]; |
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$descent->[1] = $entry2[0]; |
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$node->[0] = $entry1[1]; |
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$node->[1] = $entry2[1]; |
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push @{$self->{meta}->{$descent->[0]}->{childnodes}}, $node->[0]; |
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push @{$self->{meta}->{$descent->[1]}->{childnodes}}, $node->[1]; |
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} elsif (ref $_ eq 'HASH') { |
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foreach my $entry_key (keys %$_) { |
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my $entry_val = $_->{$entry_key}; |
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push @{$self->{meta}->{$entry_key}->{childnodes}}, $entry_val; |
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} |
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} |
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|
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} |
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|
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} |
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|
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sub _buildMetadataV1 { |
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my $self = shift; |
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|
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# decompose identifiers for each partner |
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# TODO: refactor!!! take this list from already established/given metadata |
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foreach ('source', 'target') { |
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|
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# get/set metadata for further processing |
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|
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# Partner and Node (e.g.: "L:Country" or "R:countries.csv") |
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if (my $item = $self->{args}->{$_}) { |
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my @item = split(':', $item); |
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$self->{meta}->{$_}->{dbkey} = $item[0]; |
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$self->{meta}->{$_}->{node} = $item[1]; |
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} |
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|
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# Filter |
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if (my $item_filter = $self->{args}->{$_ . '_filter'}) { |
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$self->{meta}->{$_}->{filter} = $item_filter; |
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} |
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|
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# IdentProvider |
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if (my $item_ident = $self->{args}->{$_ . '_ident'}) { |
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my @item_ident = split(':', $item_ident); |
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$self->{meta}->{$_}->{IdentProvider} = { method => $item_ident[0], arg => $item_ident[1] }; |
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} |
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|
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#print Dumper($self->{meta}); |
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|
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# TODO: ChecksumProvider |
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|
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# exclude properties/subnodes |
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if (my $item_exclude = $self->{args}->{$_ . '_exclude'}) { |
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$self->{meta}->{$_}->{subnodes_exclude} = $item_exclude; |
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} |
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|
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# TypeProvider |
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if (my $item_type = $self->{args}->{$_ . '_type'}) { |
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my @item_type = split(':', $item_type); |
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$self->{meta}->{$_}->{TypeProvider} = { method => $item_type[0], arg => $item_type[1] }; |
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} |
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|
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# Callbacks - writers (will be triggered _before_ writing to target) |
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if (my $item_writers = $self->{args}->{$_ . '_callbacks_write'}) { |
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my $descent = $_; # this is important since the following code inside the map wants to use its own context variables |
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map { $self->{meta}->{$descent}->{Callback}->{write}->{$_}++; } @$item_writers; |
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} |
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|
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# Callbacks - readers (will be triggered _after_ reading from source) |
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if (my $item_readers = $self->{args}->{$_ . '_callbacks_read'}) { |
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my $descent = $_; |
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map { $self->{meta}->{$descent}->{Callback}->{read}->{$_}++; } @$item_readers; |
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} |
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|
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# resolve storage objects |
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#$self->{$_} = $self->{container}->{storage}->{$self->{meta}->{$_}->{dbkey}}; |
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# relink references to metainfo |
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$self->{meta}->{$_}->{storage} = $self->{container}->{storage}->{$self->{meta}->{$_}->{dbkey}}; |
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#print "iiiiisprov: ", Dumper($self->{meta}->{$_}->{storage}), "\n"; |
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} |
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|
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} |
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|
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# TODO: abstract the hardwired use of "source" and "target" in here somehow - hmmmm....... /(="§/%??? |
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sub _syncNodes { |
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|
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my $self = shift; |
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|
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my $tc = OneLineDumpHash->new( {} ); |
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my $results; |
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|
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# set of objects is already in $self->{args} |
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# TODO: make independent of the terminology "object..." |
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$results = $self->{args}->{objectSet} if $self->{args}->{objectSet}; |
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|
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# apply filter |
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if (my $filter = $self->{meta}->{source}->{filter}) { |
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#print Dumper($filter); |
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#exit; |
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$results ||= $self->_getNodeList('source', $filter); |
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} |
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|
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# get reference to node list from convenient method provided by CORE-HANDLE |
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#$results ||= $self->{source}->getListUnfiltered($self->{meta}->{source}->{node}); |
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#$results ||= $self->{meta}->{source}->{storage}->getListUnfiltered($self->{meta}->{source}->{node}); |
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$results ||= $self->_getNodeList('source'); |
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|
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# checkpoint: do we actually have a list to iterate through? |
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if (!$results || !@{$results}) { |
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$logger->notice( __PACKAGE__ . "->syncNodes: No nodes to synchronize." ); |
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return; |
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} |
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|
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# dereference |
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my @results = @{$results}; |
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|
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# iterate through set |
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foreach my $source_node_real (@results) { |
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|
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$tc->{total}++; |
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|
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#print "======================== iter", "\n"; |
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|
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# clone object (in case we have to modify it here) |
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# TODO: |
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# - is a "deep_copy" needed here if occouring modifications take place? |
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# - puuhhhh, i guess a deep_copy would destroy tangram mechanisms? |
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# - after all, just take care for now that this object doesn't get updated! |
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my $source_node = $source_node_real; |
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|
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# modify entry - handle new style callbacks (the readers) |
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#print Dumper($source_node); |
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#exit; |
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|
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my $descent = 'source'; |
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|
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# handle callbacks right now while scanning them (asymmetric to the writers) |
310 |
my $map_callbacks = {}; |
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if (my $callbacks = $self->{meta}->{$descent}->{Callback}) { |
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|
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my $error = 0; |
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|
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foreach my $node (keys %{$callbacks->{read}}) { |
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|
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my $object = $source_node; |
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my $value; # = $source_node->{$node}; |
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|
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# ------------ half-redundant: make $self->callCallback($object, $value, $opts) |
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my $perl_callback = $self->{meta}->{$descent}->{node} . '::' . $node . '_read'; |
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my $evalstring = 'return ' . $perl_callback . '( { object => $object, property => $node, value => $value, storage => $self->{meta}->{$descent}->{storage} } );'; |
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#print $evalstring, "\n"; exit; |
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my $cb_result = eval($evalstring); |
325 |
if ($@) { |
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die $@; |
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$error = 1; |
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print $@, "\n"; |
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} |
330 |
# ------------ half-redundant: make $self->callCallback($object, $value, $opts) |
331 |
|
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$source_node->{$node} = $cb_result; |
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|
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} |
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|
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} |
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|
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#print Dumper($source_node); |
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|
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# exclude defined fields (simply delete from object) |
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map { delete $source_node->{$_} } @{$self->{meta}->{source}->{subnodes_exclude}}; |
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|
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# here we accumulate information about the status of the current node (payload/row/object/item/entry) |
344 |
$self->{node} = {}; |
345 |
$self->{node}->{source}->{payload} = $source_node; |
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|
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#print "res - ident", "\n"; |
348 |
|
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# determine ident of entry |
350 |
my $identOK = $self->_resolveNodeIdent('source'); |
351 |
#if (!$identOK && lc $self->{args}->{direction} ne 'import') { |
352 |
if (!$identOK) { |
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#print Dumper($self->{meta}->{source}); |
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$logger->critical( __PACKAGE__ . "->syncNodes: No ident found in source node \"$self->{meta}->{source}->{node}\", try to \"prepare\" this node first?" ); |
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return; |
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} |
357 |
|
358 |
#print "statload", "\n"; |
359 |
#print "ident: ", $self->{node}->{source}->{ident}, "\n"; |
360 |
#print Dumper($self->{node}); |
361 |
|
362 |
my $statOK = $self->_statloadNode('target', $self->{node}->{source}->{ident}); |
363 |
|
364 |
#print Dumper($self->{node}); |
365 |
|
366 |
# mark node as new either if there's no ident or if stat/load failed |
367 |
if (!$statOK) { |
368 |
$self->{node}->{status}->{new} = 1; |
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print "n" if $self->{verbose}; |
370 |
} |
371 |
|
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#print "checksum", "\n"; |
373 |
|
374 |
# determine status of entry by synchronization method |
375 |
if ( (lc $self->{args}->{method} eq 'checksum') ) { |
376 |
#if ( $statOK && (lc $self->{args}->{method} eq 'checksum') ) { |
377 |
#if ( !$self->{node}->{status}->{new} && (lc $self->{args}->{method} eq 'checksum') ) { |
378 |
|
379 |
# TODO: |
380 |
# is this really worth a "critical"??? |
381 |
# no - it should just be a debug appendix i believe |
382 |
|
383 |
#print "readcs", "\n"; |
384 |
|
385 |
# calculate checksum of source node |
386 |
#$self->_calcChecksum('source'); |
387 |
if (!$self->_readChecksum('source')) { |
388 |
$logger->critical( __PACKAGE__ . "->_readChecksum: Could not find \"source\" entry with ident=\"$self->{node}->{source}->{ident}\"" ); |
389 |
$tc->{skip}++; |
390 |
print "s" if $self->{verbose}; |
391 |
next; |
392 |
} |
393 |
|
394 |
# get checksum from synchronization target |
395 |
$self->_readChecksum('target'); |
396 |
#if (!$self->_readChecksum('target')) { |
397 |
# $logger->critical( __PACKAGE__ . "->_readChecksum: Could not find \"target\" entry with ident=\"$self->{node}->{source}->{ident}\"" ); |
398 |
# next; |
399 |
#} |
400 |
|
401 |
# pre flight check: do we actually have a checksum provided? |
402 |
#if (!$self->{node}->{source}->{checksum}) { |
403 |
# print "Source checksum for entry with ident \"$self->{node}->{source}->{ident}\" could not be calculated, maybe it's missing?.", "\n"; |
404 |
# return; |
405 |
#} |
406 |
|
407 |
# determine if entry is "new" or "dirty" |
408 |
# after all, this seems to be the point where the hammer falls..... |
409 |
print "c" if $self->{verbose}; |
410 |
$self->{node}->{status}->{new} = !$self->{node}->{target}->{checksum}; |
411 |
if (!$self->{node}->{status}->{new}) { |
412 |
$self->{node}->{status}->{dirty} = |
413 |
$self->{node}->{status}->{new} || |
414 |
(!$self->{node}->{source}->{checksum} || !$self->{node}->{target}->{checksum}) || |
415 |
($self->{node}->{source}->{checksum} ne $self->{node}->{target}->{checksum}) || |
416 |
$self->{args}->{force}; |
417 |
} |
418 |
|
419 |
} |
420 |
|
421 |
# first reaction on entry-status: continue with next entry if the current is already "in sync" |
422 |
if (!$self->{node}->{status}->{new} && !$self->{node}->{status}->{dirty}) { |
423 |
$tc->{in_sync}++; |
424 |
next; |
425 |
} |
426 |
|
427 |
# build map to actually transfer the data from source to target |
428 |
$self->_buildMap(); |
429 |
|
430 |
|
431 |
#print Dumper($self->{node}); exit; |
432 |
|
433 |
#print "attempt", "\n"; |
434 |
|
435 |
# additional (new) checks for feature "write-protection" |
436 |
if ($self->{meta}->{target}->{storage}->{isWriteProtected}) { |
437 |
$tc->{attempt_transfer}++; |
438 |
print "\n" if $self->{verbose}; |
439 |
$logger->notice( __PACKAGE__ . "->syncNodes: Target is write-protected. Will not insert or modify node. " . |
440 |
"(Ident: $self->{node}->{source}->{ident} " . "Dump:\n" . Dumper($self->{node}->{source}->{payload}) . ")" ); |
441 |
print "\n" if $self->{verbose}; |
442 |
$tc->{skip}++; |
443 |
next; |
444 |
} |
445 |
|
446 |
# transfer contents of map to target |
447 |
if ($self->{node}->{status}->{new}) { |
448 |
$tc->{attempt_new}++; |
449 |
$self->_doTransferToTarget('insert'); |
450 |
# asymmetry: refetch node from target to re-calculate new ident and checksum (TODO: is IdentAuthority of relevance here?) |
451 |
#print Dumper($self->{node}); |
452 |
$self->_statloadNode('target', $self->{node}->{target}->{ident}, 1); |
453 |
$self->_readChecksum('target'); |
454 |
|
455 |
} elsif ($self->{node}->{status}->{dirty}) { |
456 |
$tc->{attempt_modify}++; |
457 |
# asymmetry: get ident before updating (TODO: is IdentAuthority of relevance here?) |
458 |
$self->{node}->{target}->{ident} = $self->{node}->{map}->{$self->{meta}->{target}->{IdentProvider}->{arg}}; |
459 |
$self->_doTransferToTarget('update'); |
460 |
$self->_readChecksum('target'); |
461 |
} |
462 |
|
463 |
if ($self->{node}->{status}->{ok}) { |
464 |
$tc->{ok}++; |
465 |
print "t" if $self->{verbose}; |
466 |
} |
467 |
|
468 |
if ($self->{node}->{status}->{error}) { |
469 |
$tc->{error}++; |
470 |
push( @{$tc->{error_per_row}}, $self->{node}->{status}->{error} ); |
471 |
print "e" if $self->{verbose}; |
472 |
} |
473 |
|
474 |
# change ident in source (take from target), if transfer was ok and target is an IdentAuthority |
475 |
# this is (for now) called a "retransmit" indicated by a "r"-character when verbosing |
476 |
if ($self->{node}->{status}->{ok} && $self->{meta}->{target}->{storage}->{isIdentAuthority}) { |
477 |
print "r" if $self->{verbose}; |
478 |
#print Dumper($self->{meta}); |
479 |
#print Dumper($self->{node}); |
480 |
#exit; |
481 |
$self->_doModifySource_IdentChecksum($self->{node}->{target}->{ident}); |
482 |
} |
483 |
|
484 |
print ":" if $self->{verbose}; |
485 |
|
486 |
} |
487 |
|
488 |
print "\n" if $self->{verbose}; |
489 |
|
490 |
# build user-message from some stats |
491 |
my $msg = "statistics: $tc"; |
492 |
|
493 |
if ($tc->{error_per_row}) { |
494 |
$msg .= "\n"; |
495 |
$msg .= "errors from \"error_per_row\":" . "\n"; |
496 |
$msg .= Dumper($tc->{error_per_row}); |
497 |
} |
498 |
|
499 |
# todo!!! |
500 |
#sysevent( { usermsg => $msg, level => $level }, $taskEvent ); |
501 |
$logger->info( __PACKAGE__ . "->syncNodes: $msg" ); |
502 |
|
503 |
return $tc; |
504 |
|
505 |
} |
506 |
|
507 |
|
508 |
# refactor this as some core-function to do a generic dump resolving data-encapsulations of e.g. Set::Object |
509 |
sub _dumpCompact { |
510 |
my $self = shift; |
511 |
|
512 |
#my $vars = \@_; |
513 |
my @data = (); |
514 |
|
515 |
my $count = 0; |
516 |
foreach (@_) { |
517 |
my $item = {}; |
518 |
foreach my $key (keys %$_) { |
519 |
my $val = $_->{$key}; |
520 |
|
521 |
#print Dumper($val); |
522 |
|
523 |
if (ref $val eq 'Set::Object') { |
524 |
#print "========================= SET", "\n"; |
525 |
#print Dumper($val); |
526 |
#print Dumper($val->members()); |
527 |
#$val = $val->members(); |
528 |
#$vars->[$count]->{$key} = $val->members() if $val->can("members"); |
529 |
#$item->{$key} = $val->members() if $val->can("members"); |
530 |
$item->{$key} = $val->members(); |
531 |
#print Dumper($vars->[$count]->{$key}); |
532 |
|
533 |
} else { |
534 |
$item->{$key} = $val; |
535 |
} |
536 |
|
537 |
} |
538 |
push @data, $item; |
539 |
$count++; |
540 |
} |
541 |
|
542 |
#print "Dump:", Dumper(@data), "\n"; |
543 |
|
544 |
$Data::Dumper::Indent = 0; |
545 |
my $result = Dumper(@data); |
546 |
$Data::Dumper::Indent = 2; |
547 |
return $result; |
548 |
|
549 |
} |
550 |
|
551 |
|
552 |
sub _calcChecksum { |
553 |
|
554 |
my $self = shift; |
555 |
my $descent = shift; |
556 |
my $specifier = shift; |
557 |
|
558 |
# calculate checksum for current object |
559 |
my $ident = $self->{node}->{$descent}->{ident}; |
560 |
|
561 |
# build dump of this node |
562 |
my $payload = $self->{node}->{$descent}->{payload}; |
563 |
#my $dump = $ident . "\n" . $item->quickdump(); |
564 |
#my $dump = $ident . "\n" . Dumper($item); |
565 |
my $dump = $ident . "\n" . $self->_dumpCompact($payload); |
566 |
|
567 |
# TODO: $logger->dump( ... ); |
568 |
#$logger->debug( __PACKAGE__ . ": " . $dump ); |
569 |
#$logger->dump( __PACKAGE__ . ": " . $dump ); |
570 |
|
571 |
# calculate checksum from dump |
572 |
# note: the 32-bit integer hash from DBI seems |
573 |
# to generate duplicates with small payloads already in ranges of hundreds of items/rows!!! |
574 |
# try to avoid to use it or try to use it only for payloads greater than, hmmm, let's say 30 chars? |
575 |
# (we had about 15 chars average per item (row)) |
576 |
|
577 |
# md5-based fingerprint, base64 encoded (from Digest::MD5) |
578 |
$self->{node}->{$descent}->{checksum} = md5_base64($dump) . '=='; |
579 |
# 32-bit integer "hash" value (maybe faster?) (from DBI) |
580 |
#$self->{node}->{$descent}->{checksum} = DBI::hash($dump, 1); |
581 |
|
582 |
# signal good |
583 |
return 1; |
584 |
|
585 |
} |
586 |
|
587 |
|
588 |
sub _readChecksum { |
589 |
my $self = shift; |
590 |
|
591 |
my $descent = shift; |
592 |
|
593 |
#print "getcheck:", "\n"; print Dumper($self->{node}->{$descent}); |
594 |
|
595 |
if (!$self->{node}->{$descent}) { |
596 |
# signal checksum bad |
597 |
return; |
598 |
} |
599 |
|
600 |
# get checksum for current entry |
601 |
# TODO: don't have the checksum column/property hardcoded as "cs" here, make this configurable somehow |
602 |
|
603 |
if ($self->{meta}->{$descent}->{storage}->{isChecksumAuthority}) { |
604 |
#$self->{node}->{$descent}->{checksum} = $entry->{cs}; |
605 |
#$self->{node}->{$descent}->{checksum} = $self->_calcChecksum($descent); # $entry->{cs}; |
606 |
#print "descent: $descent", "\n"; |
607 |
$self->_calcChecksum($descent); |
608 |
#print "checksum: ", $self->{node}->{$descent}->{checksum}, "\n"; |
609 |
} else { |
610 |
|
611 |
#$self->{node}->{$descent}->{checksum} = $entry->{cs}; |
612 |
$self->{node}->{$descent}->{checksum} = $self->{node}->{$descent}->{payload}->{cs}; |
613 |
} |
614 |
|
615 |
# signal checksum good |
616 |
return 1; |
617 |
|
618 |
} |
619 |
|
620 |
|
621 |
sub _buildMap { |
622 |
|
623 |
my $self = shift; |
624 |
|
625 |
# field-structure for building sql |
626 |
# mapping of sql-fieldnames to object-attributes |
627 |
$self->{node}->{map} = {}; |
628 |
|
629 |
# manually set ... |
630 |
# ... object-id |
631 |
$self->{node}->{map}->{$self->{meta}->{target}->{IdentProvider}->{arg}} = $self->{node}->{source}->{ident}; |
632 |
# ... checksum |
633 |
$self->{node}->{map}->{cs} = $self->{node}->{source}->{checksum}; |
634 |
|
635 |
#print "sqlmap: ", Dumper($self->{node}->{map}), "\n"; |
636 |
|
637 |
# for transferring flat structures via simple (1:1) mapping |
638 |
# TODO: diff per property / property value |
639 |
|
640 |
if ($self->{args}->{mapping}) { |
641 |
# apply mapping from $self->{args}->{mapping} to $self->{node}->{map} |
642 |
#foreach my $key (@{$self->{meta}->{source}->{childnodes}}) { |
643 |
my @childnodes = @{$self->{meta}->{source}->{childnodes}}; |
644 |
for (my $mapidx = 0; $mapidx <= $#childnodes; $mapidx++) { |
645 |
#my $map_right = $self->{args}->{mapping}->{$key}; |
646 |
|
647 |
$self->{node}->{source}->{propcache} = {}; |
648 |
$self->{node}->{target}->{propcache} = {}; |
649 |
|
650 |
# get property name |
651 |
$self->{node}->{source}->{propcache}->{property} = $self->{meta}->{source}->{childnodes}->[$mapidx]; |
652 |
$self->{node}->{target}->{propcache}->{property} = $self->{meta}->{target}->{childnodes}->[$mapidx]; |
653 |
#print "map: $map_right", "\n"; |
654 |
|
655 |
# get property value |
656 |
my $value; |
657 |
|
658 |
# detect for callback - old style - (maybe the better???) |
659 |
if (ref($self->{node}->{target}->{map}) eq 'CODE') { |
660 |
#$value = &$map_right($objClone); |
661 |
} else { |
662 |
# plain (scalar?) value |
663 |
#$value = $objClone->{$map_right}; |
664 |
$self->{node}->{source}->{propcache}->{value} = $self->{node}->{source}->{payload}->{$self->{node}->{source}->{propcache}->{property}}; |
665 |
} |
666 |
#$self->{node}->{map}->{$key} = $value; |
667 |
|
668 |
# detect expression |
669 |
# for transferring deeply nested structures described by expressions |
670 |
#print "val: $self->{node}->{source}->{propcache}->{value}", "\n"; |
671 |
if ($self->{node}->{source}->{propcache}->{property} =~ s/^expr://) { |
672 |
|
673 |
# create an anonymous sub to act as callback target dispatcher |
674 |
my $cb_dispatcher = sub { |
675 |
#print "=============== CALLBACK DISPATCHER", "\n"; |
676 |
#print "ident: ", $self->{node}->{source}->{ident}, "\n"; |
677 |
#return $self->{node}->{source}->{ident}; |
678 |
|
679 |
}; |
680 |
|
681 |
|
682 |
#print Dumper($self->{node}); |
683 |
|
684 |
# build callback map for helper function |
685 |
#my $cbmap = { $self->{meta}->{source}->{IdentProvider}->{arg} => $cb_dispatcher }; |
686 |
my $cbmap = {}; |
687 |
my $value = refexpr2perlref($self->{node}->{source}->{payload}, $self->{node}->{source}->{propcache}->{property}, $cbmap); |
688 |
$self->{node}->{source}->{propcache}->{value} = $value; |
689 |
} |
690 |
|
691 |
# encode values dependent on type of underlying storage here - expand cases... |
692 |
my $storage_type = $self->{meta}->{target}->{storage}->{locator}->{type}; |
693 |
if ($storage_type eq 'DBI') { |
694 |
# ...for sql |
695 |
$self->{node}->{source}->{propcache}->{value} = quotesql($self->{node}->{source}->{propcache}->{value}); |
696 |
} |
697 |
elsif ($storage_type eq 'Tangram') { |
698 |
# iso? utf8 already possible? |
699 |
|
700 |
} elsif ($storage_type eq 'LDAP') { |
701 |
# TODO: encode utf8 here? |
702 |
} |
703 |
|
704 |
# store value to transfer map |
705 |
$self->{node}->{map}->{$self->{node}->{target}->{propcache}->{property}} = $self->{node}->{source}->{propcache}->{value}; |
706 |
|
707 |
} |
708 |
} |
709 |
|
710 |
|
711 |
# TODO: $logger->dump( ... ); |
712 |
#$logger->debug( "sqlmap:" . "\n" . Dumper($self->{node}->{map}) ); |
713 |
#print "sqlmap: ", Dumper($self->{node}->{map}), "\n"; |
714 |
#print "entrystatus: ", Dumper($self->{node}), "\n"; |
715 |
|
716 |
} |
717 |
|
718 |
sub _resolveNodeIdent { |
719 |
my $self = shift; |
720 |
my $descent = shift; |
721 |
|
722 |
#print Dumper($self->{node}->{$descent}); |
723 |
|
724 |
# get to the payload |
725 |
#my $item = $specifier->{item}; |
726 |
my $payload = $self->{node}->{$descent}->{payload}; |
727 |
|
728 |
# resolve method to get to the id of the given item |
729 |
# we use global metadata and the given descent for this task |
730 |
#my $ident = $self->{$descent}->id($item); |
731 |
#my $ident = $self->{meta}->{$descent}->{storage}->id($item); |
732 |
|
733 |
my $ident; |
734 |
my $provider_method = $self->{meta}->{$descent}->{IdentProvider}->{method}; |
735 |
my $provider_arg = $self->{meta}->{$descent}->{IdentProvider}->{arg}; |
736 |
|
737 |
# resolve to ident |
738 |
if ($provider_method eq 'property') { |
739 |
$ident = $payload->{$provider_arg}; |
740 |
|
741 |
} elsif ($provider_method eq 'storage_method') { |
742 |
#$ident = $self->{meta}->{$descent}->{storage}->id($item); |
743 |
$ident = $self->{meta}->{$descent}->{storage}->$provider_arg($payload); |
744 |
} |
745 |
|
746 |
$self->{node}->{$descent}->{ident} = $ident; |
747 |
|
748 |
return 1 if $ident; |
749 |
|
750 |
} |
751 |
|
752 |
|
753 |
sub _modifyNode { |
754 |
my $self = shift; |
755 |
my $descent = shift; |
756 |
my $action = shift; |
757 |
my $map = shift; |
758 |
my $crit = shift; |
759 |
|
760 |
# map for new style callbacks |
761 |
my $map_callbacks = {}; |
762 |
|
763 |
# checks go first! |
764 |
|
765 |
# TODO: this should be reviewed first - before extending ;-) |
766 |
# TODO: this should be extended: |
767 |
# count this cases inside the caller to this sub and provide a better overall message |
768 |
# if this counts still zero in the end: |
769 |
# "No nodes have been touched for modify: Do you have column-headers in your csv file?" |
770 |
if (not defined $self->{node}) { |
771 |
#$logger->critical( __PACKAGE__ . "->_modifyNode failed: \"$descent\" node is empty." ); |
772 |
#return; |
773 |
} |
774 |
|
775 |
# transfer callback nodes from value map to callback map - handle them afterwards! - (new style callbacks) |
776 |
if (my $callbacks = $self->{meta}->{$descent}->{Callback}) { |
777 |
foreach my $callback (keys %{$callbacks->{write}}) { |
778 |
$map_callbacks->{write}->{$callback} = $map->{$callback}; |
779 |
delete $map->{$callback}; |
780 |
} |
781 |
} |
782 |
|
783 |
|
784 |
#print Dumper($self->{meta}); |
785 |
|
786 |
# DBI speaks SQL |
787 |
if ($self->{meta}->{$descent}->{storage}->{locator}->{type} eq 'DBI') { |
788 |
|
789 |
#print Dumper($self->{node}); |
790 |
my $sql_main; |
791 |
# translate map to sql |
792 |
#print $action, "\n"; exit; |
793 |
#print $self->{meta}->{$descent}->{node}, "\n"; exit; |
794 |
#print "action:"; |
795 |
#print $action, "\n"; |
796 |
#$action = "anc"; |
797 |
#print "yai", "\n"; |
798 |
|
799 |
#print Dumper($map); |
800 |
#delete $map->{cs}; |
801 |
|
802 |
if (lc($action) eq 'insert') { |
803 |
$sql_main = hash2Sql($self->{meta}->{$descent}->{node}, $map, 'SQL_INSERT'); |
804 |
} elsif (lc $action eq 'update') { |
805 |
$crit ||= "$self->{meta}->{$descent}->{IdentProvider}->{arg}='$self->{node}->{$descent}->{ident}'"; |
806 |
$sql_main = hash2Sql($self->{meta}->{$descent}->{node}, $map, 'SQL_UPDATE', $crit); |
807 |
} |
808 |
|
809 |
#$sql_main = "UPDATE currencies_csv SET oid='abcdef' WHERE text='Australian Dollar' AND key='AUD';"; |
810 |
#$sql_main = "UPDATE currencies_csv SET oid='huhu2' WHERE ekey='AUD'"; |
811 |
|
812 |
#print "sql: ", $sql_main, "\n"; |
813 |
#exit; |
814 |
|
815 |
# transfer data |
816 |
my $sqlHandle = $self->{meta}->{$descent}->{storage}->sendCommand($sql_main); |
817 |
|
818 |
#exit; |
819 |
|
820 |
# handle errors |
821 |
if ($sqlHandle->err) { |
822 |
#if ($self->{args}->{debug}) { print "sql-error with statement: $sql_main", "\n"; } |
823 |
$self->{node}->{status}->{error} = { |
824 |
statement => $sql_main, |
825 |
state => $sqlHandle->state, |
826 |
err => $sqlHandle->err, |
827 |
errstr => $sqlHandle->errstr, |
828 |
}; |
829 |
} else { |
830 |
$self->{node}->{status}->{ok} = 1; |
831 |
} |
832 |
|
833 |
# Tangram does it the oo-way (naturally) |
834 |
} elsif ($self->{meta}->{$descent}->{storage}->{locator}->{type} eq 'Tangram') { |
835 |
my $sql_main; |
836 |
my $object; |
837 |
|
838 |
# determine classname |
839 |
my $classname = $self->{meta}->{$descent}->{node}; |
840 |
|
841 |
# properties to exclude |
842 |
my @exclude = @{$self->{meta}->{$descent}->{subnodes_exclude}}; |
843 |
|
844 |
|
845 |
if (my $identProvider = $self->{meta}->{$descent}->{IdentProvider}) { |
846 |
push @exclude, $identProvider->{arg}; |
847 |
} |
848 |
|
849 |
# new feature: |
850 |
# - check TypeProvider metadata property from other side |
851 |
# - use argument (arg) inside as a classname for object creation on this side |
852 |
#my $otherSide = $self->_otherSide($descent); |
853 |
if (my $typeProvider = $self->{meta}->{$descent}->{TypeProvider}) { |
854 |
#print Dumper($map); |
855 |
$classname = $map->{$typeProvider->{arg}}; |
856 |
# remove nodes from map also (push nodes to "subnodes_exclude" list) |
857 |
push @exclude, $typeProvider->{arg}; |
858 |
} |
859 |
|
860 |
# exclude banned properties (remove from map) |
861 |
#map { delete $self->{node}->{map}->{$_} } @{$self->{args}->{exclude}}; |
862 |
map { delete $map->{$_} } @exclude; |
863 |
|
864 |
# list of properties |
865 |
my @props = keys %{$map}; |
866 |
|
867 |
# transfer data |
868 |
if (lc $action eq 'insert') { |
869 |
|
870 |
# build array to initialize object |
871 |
#my @initarray = (); |
872 |
#map { push @initarray, $_, undef; } @props; |
873 |
|
874 |
# make the object persistent in four steps: |
875 |
# - raw create (perl / class tangram scope) |
876 |
# - engine insert (tangram scope) ... this establishes inheritance - don't try to fill in inherited properties before! |
877 |
# - raw fill-in from hash (perl scope) |
878 |
# - engine update (tangram scope) ... this updates all properties just filled in |
879 |
|
880 |
# create new object ... |
881 |
#my $object = $classname->new( @initarray ); |
882 |
$object = $classname->new(); |
883 |
|
884 |
# ... pass to orm ... |
885 |
$self->{meta}->{$descent}->{storage}->insert($object); |
886 |
|
887 |
# ... and initialize with empty (undef'd) properties. |
888 |
#print Dumper(@props); |
889 |
map { $object->{$_} = undef; } @props; |
890 |
|
891 |
# mix in values ... |
892 |
hash2object($object, $map); |
893 |
|
894 |
# ... and re-update@orm. |
895 |
#print Dumper($object); |
896 |
$self->{meta}->{$descent}->{storage}->update($object); |
897 |
|
898 |
# asymmetry: get ident after insert |
899 |
# TODO: |
900 |
# - just do this if it is an IdentAuthority |
901 |
# - use IdentProvider metadata here |
902 |
#print Dumper($self->{meta}->{$descent}); |
903 |
my $oid = $self->{meta}->{$descent}->{storage}->id($object); |
904 |
#print "oid: $oid", "\n"; |
905 |
$self->{node}->{$descent}->{ident} = $oid; |
906 |
|
907 |
|
908 |
} elsif (lc $action eq 'update') { |
909 |
|
910 |
# get fresh object from orm first |
911 |
$object = $self->{meta}->{$descent}->{storage}->load($self->{node}->{$descent}->{ident}); |
912 |
|
913 |
#print Dumper($self->{node}); |
914 |
|
915 |
# mix in values |
916 |
#print Dumper($object); |
917 |
hash2object($object, $map); |
918 |
#print Dumper($object); |
919 |
#exit; |
920 |
$self->{meta}->{$descent}->{storage}->update($object); |
921 |
} |
922 |
|
923 |
my $error = 0; |
924 |
|
925 |
# handle new style callbacks - this is a HACK - do this without an eval! |
926 |
#print Dumper($map); |
927 |
#print "cb: ", Dumper($self->{meta}->{$descent}->{Callback}); |
928 |
#print Dumper($map_callbacks); |
929 |
foreach my $node (keys %{$map_callbacks->{write}}) { |
930 |
#print Dumper($node); |
931 |
my $perl_callback = $self->{meta}->{$descent}->{node} . '::' . $node . '_write'; |
932 |
my $evalstring = $perl_callback . '( { object => $object, value => $map_callbacks->{write}->{$node}, storage => $self->{meta}->{$descent}->{storage} } );'; |
933 |
#print $evalstring, "\n"; exit; |
934 |
eval($evalstring); |
935 |
if ($@) { |
936 |
$error = 1; |
937 |
print $@, "\n"; |
938 |
} |
939 |
|
940 |
#print "after eval", "\n"; |
941 |
|
942 |
if (!$error) { |
943 |
# re-update@orm |
944 |
$self->{meta}->{$descent}->{storage}->update($object); |
945 |
} |
946 |
} |
947 |
|
948 |
# handle errors |
949 |
if ($error) { |
950 |
#print "error", "\n"; |
951 |
=pod |
952 |
my $sqlHandle; |
953 |
#if ($self->{args}->{debug}) { print "sql-error with statement: $sql_main", "\n"; } |
954 |
$self->{node}->{status}->{error} = { |
955 |
statement => $sql_main, |
956 |
state => $sqlHandle->state, |
957 |
err => $sqlHandle->err, |
958 |
errstr => $sqlHandle->errstr, |
959 |
}; |
960 |
=cut |
961 |
# rollback.... |
962 |
#print "rollback", "\n"; |
963 |
$self->{meta}->{$descent}->{storage}->erase($object); |
964 |
#print "after rollback", "\n"; |
965 |
} else { |
966 |
$self->{node}->{status}->{ok} = 1; |
967 |
} |
968 |
|
969 |
|
970 |
} |
971 |
|
972 |
} |
973 |
|
974 |
# TODO: |
975 |
# this should be split up into... |
976 |
# - a "_statNode" (should just touch the node to check for existance) |
977 |
# - a "_loadNode" (should load node completely) |
978 |
# - maybe additionally a "loadNodeProperty" (may specify properties to load) |
979 |
# - introduce $self->{nodecache} for this purpose |
980 |
# TODO: |
981 |
# should we: |
982 |
# - not pass ident in here but resolve it via "$descent"? |
983 |
# - refactor this and stuff it with additional debug/error message |
984 |
# - this = the way the implicit load mechanism works |
985 |
sub _statloadNode { |
986 |
|
987 |
my $self = shift; |
988 |
my $descent = shift; |
989 |
my $ident = shift; |
990 |
my $force = shift; |
991 |
|
992 |
# fetch entry to retrieve checksum from |
993 |
# was: |
994 |
if (!$self->{node}->{$descent} || $force) { |
995 |
# is: |
996 |
#if (!$self->{node}->{$descent}->{item} || $force) { |
997 |
|
998 |
if (!$ident) { |
999 |
#print "\n", "Attempt to fetch entry implicitely by ident failed: no ident given! This may result in an insert if no write-protection is in the way.", "\n"; |
1000 |
return; |
1001 |
} |
1002 |
|
1003 |
# patch for DBD::CSV |
1004 |
if ($ident && $ident eq 'Null') { |
1005 |
return; |
1006 |
} |
1007 |
|
1008 |
#print "yai!", "\n"; |
1009 |
|
1010 |
my $query = { |
1011 |
node => $self->{meta}->{$descent}->{node}, |
1012 |
subnodes => [qw( cs )], |
1013 |
criterias => [ |
1014 |
{ key => $self->{meta}->{$descent}->{IdentProvider}->{arg}, |
1015 |
op => 'eq', |
1016 |
val => $ident }, |
1017 |
] |
1018 |
}; |
1019 |
|
1020 |
#print Dumper($query); |
1021 |
|
1022 |
my $result = $self->{meta}->{$descent}->{storage}->sendQuery($query); |
1023 |
|
1024 |
my $entry = $result->getNextEntry(); |
1025 |
|
1026 |
#print Dumper($entry); |
1027 |
#print "pers: " . $self->{meta}->{$descent}->{storage}->is_persistent($entry), "\n"; |
1028 |
#my $state = $self->{meta}->{$descent}->{storage}->_fetch_object_state($entry, { name => 'TransactionHop' } ); |
1029 |
#print Dumper($state); |
1030 |
|
1031 |
my $status = $result->getStatus(); |
1032 |
|
1033 |
#print Dumper($status); |
1034 |
|
1035 |
# TODO: enhance error handling (store inside tc) |
1036 |
#if (!$row) { |
1037 |
# print "\n", "row error", "\n"; |
1038 |
# next; |
1039 |
#} |
1040 |
|
1041 |
# these checks run before actually loading payload- and meta-data to node-container |
1042 |
|
1043 |
# 1st level - hard error |
1044 |
if ($status && $status->{err}) { |
1045 |
$logger->debug( __PACKAGE__ . "->_statloadNode (ident=\"$ident\") failed - hard error (that's ok): $status->{err}" ); |
1046 |
return; |
1047 |
} |
1048 |
|
1049 |
# 2nd level - logical (empty/notfound) error |
1050 |
if (($status && $status->{empty}) || !$entry) { |
1051 |
$logger->debug( __PACKAGE__ . "->_statloadNode (ident=\"$ident\") failed - logical error (that's ok)" ); |
1052 |
#print "no entry (logical)", "\n"; |
1053 |
return; |
1054 |
} |
1055 |
|
1056 |
#print Dumper($entry); |
1057 |
|
1058 |
# was: |
1059 |
# $self->{node}->{$descent}->{ident} = $ident; |
1060 |
# is: |
1061 |
# TODO: re-resolve ident from entry via metadata "IdentProvider" here - like elsewhere |
1062 |
$self->{node}->{$descent}->{ident} = $ident; |
1063 |
$self->{node}->{$descent}->{payload} = $entry; |
1064 |
|
1065 |
} |
1066 |
|
1067 |
return 1; |
1068 |
|
1069 |
} |
1070 |
|
1071 |
sub _doTransferToTarget { |
1072 |
my $self = shift; |
1073 |
my $action = shift; |
1074 |
$self->_modifyNode('target', $action, $self->{node}->{map}); |
1075 |
} |
1076 |
|
1077 |
sub _doModifySource_IdentChecksum { |
1078 |
my $self = shift; |
1079 |
my $ident_new = shift; |
1080 |
# this changes an old node to a new one including ident and checksum |
1081 |
# TODO: |
1082 |
# - eventually introduce an external resource to store this data to |
1083 |
# - we won't have to "re"-modify the source node here |
1084 |
my $map = { |
1085 |
$self->{meta}->{source}->{IdentProvider}->{arg} => $ident_new, |
1086 |
cs => $self->{node}->{target}->{checksum}, |
1087 |
}; |
1088 |
|
1089 |
#print Dumper($map); |
1090 |
#print Dumper($self->{node}); |
1091 |
#exit; |
1092 |
|
1093 |
$self->_modifyNode('source', 'update', $map); |
1094 |
} |
1095 |
|
1096 |
|
1097 |
# this is a shortcut method |
1098 |
# ... let's try to avoid _any_ redundant code in here (ok... - at the cost of method lookups...) |
1099 |
sub _getNodeList { |
1100 |
my $self = shift; |
1101 |
my $descent = shift; |
1102 |
my $filter = shift; |
1103 |
return $self->{meta}->{$descent}->{storage}->getListFiltered($self->{meta}->{$descent}->{node}, $filter); |
1104 |
} |
1105 |
|
1106 |
|
1107 |
sub _prepareNode_MetaProperties { |
1108 |
my $self = shift; |
1109 |
my $descent = shift; |
1110 |
|
1111 |
$logger->info( __PACKAGE__ . "->_prepareNode_MetaProperties( descent $descent )" ); |
1112 |
|
1113 |
# TODO: this should (better) be: "my $firstnode = $self->_getFirstNode($descent);" |
1114 |
my $list = $self->_getNodeList($descent); |
1115 |
|
1116 |
# get first node |
1117 |
my $firstnode = $list->[0]; |
1118 |
|
1119 |
# check if node contains meta properties/nodes |
1120 |
# TODO: "cs" is hardcoded here! |
1121 |
my @required = ( $self->{meta}->{$descent}->{IdentProvider}->{arg}, 'cs' ); |
1122 |
my @found = keys %$firstnode; |
1123 |
#my @diff = getDifference(\@found, \@required); |
1124 |
my $diff = getDifference(\@required, \@found); |
1125 |
#print Dumper(@found); |
1126 |
#print Dumper(@required); |
1127 |
#print Dumper(@diff); |
1128 |
#if (!$#diff || $#diff == -1) { |
1129 |
if (isEmpty($diff)) { |
1130 |
$logger->warning( __PACKAGE__ . "->_prepareNode_MetaProperties: node is lacking meta properties - will try to alter..." ); |
1131 |
foreach (@required) { |
1132 |
my $sql = "ALTER TABLE $self->{meta}->{$descent}->{node} ADD COLUMN $_"; |
1133 |
#print "sql: $sql", "\n"; |
1134 |
my $res = $self->{meta}->{$descent}->{storage}->sendCommand($sql); |
1135 |
#print Dumper($res->getStatus()); |
1136 |
} |
1137 |
} |
1138 |
|
1139 |
} |
1140 |
|
1141 |
sub _prepareNode_DummyIdent { |
1142 |
my $self = shift; |
1143 |
my $descent = shift; |
1144 |
|
1145 |
$logger->info( __PACKAGE__ . "->_prepareNode_DummyIdent( descent $descent )" ); |
1146 |
|
1147 |
my $list = $self->_getNodeList($descent); |
1148 |
#print Dumper($list); |
1149 |
my $i = 0; |
1150 |
my $ident_base = 5678983; |
1151 |
my $ident_appendix = '0001'; |
1152 |
foreach my $node (@$list) { |
1153 |
my $ident_dummy = $i + $ident_base; |
1154 |
$ident_dummy .= $ident_appendix; |
1155 |
my $map = { |
1156 |
$self->{meta}->{$descent}->{IdentProvider}->{arg} => $ident_dummy, |
1157 |
cs => undef, |
1158 |
}; |
1159 |
|
1160 |
# diff lists and ... |
1161 |
my $diff = getDifference([keys %$node], [keys %$map]); |
1162 |
next if $#{$diff} == -1; |
1163 |
|
1164 |
# ... build criteria including all columns |
1165 |
my @crits; |
1166 |
foreach my $property (@$diff) { |
1167 |
next if !$property; |
1168 |
my $value = $node->{$property}; |
1169 |
next if !$value; |
1170 |
push @crits, "$property='" . quotesql($value) . "'"; |
1171 |
} |
1172 |
my $crit = join ' AND ', @crits; |
1173 |
print "p" if $self->{verbose}; |
1174 |
|
1175 |
#print Dumper($map); |
1176 |
#print Dumper($crit); |
1177 |
|
1178 |
$self->_modifyNode($descent, 'update', $map, $crit); |
1179 |
$i++; |
1180 |
} |
1181 |
|
1182 |
print "\n" if $self->{verbose}; |
1183 |
|
1184 |
if (!$i) { |
1185 |
$logger->warning( __PACKAGE__ . "->_prepareNode_DummyIdent: no nodes touched" ); |
1186 |
} |
1187 |
|
1188 |
} |
1189 |
|
1190 |
# TODO: handle this in an abstract way (wipe out use of 'source' and/or 'target' inside core) |
1191 |
sub _otherSide { |
1192 |
my $self = shift; |
1193 |
my $descent = shift; |
1194 |
return 'source' if $descent eq 'target'; |
1195 |
return 'target' if $descent eq 'source'; |
1196 |
return ''; |
1197 |
} |
1198 |
|
1199 |
sub _erase_all { |
1200 |
my $self = shift; |
1201 |
my $descent = shift; |
1202 |
#my $node = shift; |
1203 |
my $node = $self->{meta}->{$descent}->{node}; |
1204 |
$self->{meta}->{$descent}->{storage}->eraseAll($node); |
1205 |
} |
1206 |
|
1207 |
1; |